Is Nacogdoches, TX tap water safe?
Supplied by City of Nacogdoches · serves 50,226 people (21,016 connections) · Surface water · EPA ID TX1740003
Data: U.S. EPA · How we read the data · How we check it
Summary
No federal limits exceeded in EPA data.
- PFAS
- Not detectedNone of 29 PFAS found above EPA's reporting limits in 6 samples (2023–2025).
- Lead
- Below action level1.4 ppb (parts per billion) at the 90th percentile: 9 in 10 homes sampled were at or below it. Action level 15 ppb, falling to 10 ppb in Nov 2027. Monitoring period Jan 2024 – now, still in progress (results reported so far). Your home's pipes can make yours higher.
- Violations
- Resolved4 health-based violations since 2016, most recently Apr 2017.
- Built before 1986, or not sure what your service line is made of? Check your service line and test your tap. Utility data can't show your pipes.
- Want to reduce what was found? Filters for these results.
- Tested your own tap? Compare your result with these numbers. Moving? Compare this system with another.
- Read City of Nacogdoches's annual water quality report (Consumer Confidence Report). It lists every regulated contaminant tested and is usually on the utility's website or mailed with your bill, and you can also request it at (936) 559-2500. EPA: how to find it.
PFAS (“forever chemicals”)
EPA UCMR 5: 2 entry points tested Apr 2024 to May 2025. "Average" is the highest entry-point average (non-detects counted as zero), the way EPA compares UCMR 5 results to the limits. ppt = parts per trillion. These results do not determine compliance.
| Contaminant | Highest average |
|---|---|
| PFOA Not detected Limit 4 ppt | – |
| PFOS Not detected Limit 4 ppt | – |
| PFHxS Not detected Limit 10 ppt | – |
| PFNA Not detected Limit 10 ppt | – |
| HFPO-DA (GenX) Not detected Limit 10 ppt | – |
| Hazard Index (a combined score for PFHxS, PFNA, GenX and PFBS, where above 1 is over the limit) Not detected Limit 1 | – |
| PFBS Not detected Guideline 2,000 ppt | – |
| PFBA Not detected Guideline 6,000 ppt | – |
| PFHxA Not detected Guideline 3,000 ppt | – |
29 PFAS tested, 0 detected at least once. "Not detected" means below EPA's reporting limit (about 2 to 20 ppt depending on the chemical), not proven zero. PFAS not listed were not detected. The limits for PFHxS, PFNA, GenX and the Hazard Index were proposed for rescission in May 2026. That proposal is not final. Systems have until 2029 to meet the limits.
Lithium
Not detected in 6 samples (reporting limit 9 ppb). About lithium.
Lead and copper
Latest 90th percentile: 1.4 ppb lead (Jan 2024 – now (in progress)). Below action level
Highest since 2016: 1.96 ppb (Dec 2017).
| Monitoring period | Lead (90th pct.) |
|---|---|
| Jan 2024 – now (in progress) | 1.4 ppb |
| Jan 2021 – Dec 2023 | 0 ppb |
| Jul 2020 – Dec 2020 | 0 ppb |
Earlier results (9)
| Jan 2020 – Jun 2020 | 0 ppb |
| Jan 2017 – Dec 2017 | 1.96 ppb |
| Jan 2011 – Dec 2013 | 0 ppb |
| Jan 2008 – Dec 2010 | 0.6 ppb |
| Jan 2005 – Dec 2007 | 0 ppb |
| Jan 1999 – Dec 2001 | 5.3 ppb |
| Jan 1996 – Dec 1998 | 4.4 ppb |
| Jan 1995 – Dec 1995 | 5.5 ppb |
| Jan 1994 – Dec 1994 | 5.7 ppb |
Lead comes from pipes and fixtures, not the source water, so it varies home to home. The 90th percentile means 9 in 10 sampled homes were at or below it. More on lead.
Violations
| When | What happened |
|---|---|
| Jul 2016 – Apr 2017 4 times | The running annual average for TTHM was above the legal limit. EPA record: TTHM · Maximum Contaminant Level Violation, Average · measured 0.087 mg/l (limit 0.080 mg/L) Resolved |
Health-based violations mean a contaminant exceeded a limit or a required treatment step was missed. Monitoring and reporting violations mean required tests or reports were late or missing, so the water's quality during that time is unknown. The total includes every violation in EPA's records, most of them paperwork.
Earlier EPA testing (2013–2020)
| Contaminant | Highest | Guideline |
|---|---|---|
| Manganese | 6.8 ppb | 300 ppb |
| Vanadium | 0.64 ppb | 21 ppb |
| Strontium | 0.12 ppm | 1.5 ppm |
| Chromium-6 | 0.096 ppb | – |
Where it serves
Nacogdoches
ZIP codes the system reported serving: 75961, 75963, 75964
Nearby utilities
- City of Lufkin Lufkin · 20 mi
- City of Tyler Tyler · 62 mi
- Southern Utilities Tyler · 62 mi
- City of Longview Longview · 63 mi
- City of Livingston Livingston · 64 mi · PFAS above limit
- City of Huntsville Huntsville · 82 mi · PFAS above limit
Questions
Is Nacogdoches tap water safe to drink?
Most of Nacogdoches gets its water from City of Nacogdoches. City of Nacogdoches had 4 health-based violations since 2016, all since resolved. EPA testing found no PFAS above the federal limits. Federal data can't tell you about your own pipes: lead comes from service lines and plumbing, so test your tap if your home was built before 1986. For the official word, read the utility's annual Consumer Confidence Report.
Does Nacogdoches water have PFAS?
EPA tested City of Nacogdoches for 29 PFAS between Apr 2024 and May 2025 and none were detected above the reporting limits (about 2 to 20 ppt depending on the chemical).
What is the lead level in Nacogdoches water?
The most recent 90th-percentile lead result for City of Nacogdoches is 1.4 ppb, for the monitoring period that began Jan 2024 (still in progress). The federal action level is 15 ppb, falling to 10 ppb in November 2027. The 90th percentile means 9 in 10 homes sampled were at or below this number. Individual homes can be higher.
Check these numbers yourself
Every figure on this page comes from public EPA records. You don't have to take our word for it:
- EPA's own report for TX1740003: violations, enforcement and inspections, straight from EPA.
- EPA UCMR 5 data: the PFAS and lithium results (search the file for PWSID TX1740003).
- EPA SDWIS download: the lead results, population and violation records we use.
- The utility's annual water quality report (Consumer Confidence Report): ask City of Nacogdoches at (936) 559-2500, or see EPA's guide to finding it.
Found something that doesn't match? Tell us and we'll check it against EPA's records. How we check our data.
Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.